His current research interests include computer vision, multimedia, and machine learning. His group has developed new machine learning methods and intelligent systems for a broad range of vision and multimedia related applications such as autonomous driving, AR/VR, video compression and surveillance, as well as medical image analysis. He has published more than 150 papers in IEEE Transactions and leading conferences including CVPR, ICCV, ECCV, ICML, ACM MM and MICCAI. His co-authored works (with his former PhD students) received the Best Student Paper Award in CVPR 2010 and the IEEE Transactions on Multimedia Prize Paper Award in 2014.

He is/was on the editorial boards of ACM Computing Surveys, IEEE Transactions including T-PAMI, T-IP, T-NNLS, T-CSVT and T-MM, and other five journals, and served as a guest editor of more than ten special issues in multiple journals (e.g., IJCV, IEEE/ACM Transactions). He will serve/served as the Program Coordinator of ACM Multimedia 2024, a steering committee member of ICME (2016-2017) and a Program Co-chair of five international conferences/workshops (e.g., ACM Multimedia Asia 2021, MLSP 2021 and ICME 2014). He was also involved in the organization committees of many international conferences and served as an area chair of leading conferences such as ICCV, CVPR, ECCV, ACM MM and AAAI. He received the Best Associate Editor Award of T-CSVT in 2017. He is a Foreign Member of the Academia Europaea and a Fellow of the IEEE and IAPR.